The word you are looking for is Inflation

English can be a tricky language so I have some sympathy for Ms Rachida Dati, a French pollie. Her statement to Europe 1 Radio included the following words about foreign investment funds seeking 20% to 25% returns on their money “at a time when fellatio is almost non-existent”.

A better term would have been Inflation (but I like your thinking).

Sadly the YouTube clip has been pulled but she has quite a wiki posting here.